A kind of synthetic method of ammonium dihydrogen phosphate compound
A technology of ammonium dihydrogen phosphate and synthesis method, applied in the directions of phosphate, phosphorus oxyacid, electrical components, etc., can solve the problems of uneven dispersion, low temperature of grinding slurry, uneven carbon coating, etc. Uniform distribution and stable carbon content
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[0013] The synthetic method of ammonium dihydrogen phosphate complex comprises the following method steps:
[0014] (1) Dissolve ammonium dihydrogen phosphate with deionized water, configure it as a supersaturated solution at a temperature of 20-100°C, and dissolve organic sugars with deionized water. The organic sugars are sucrose, glucose, fructose, and maltose One or more than two kinds are configured at this temperature to form an organic sugar solution with a mass fraction of 30-80%. Under stirring, mix the above two solutions evenly, and let stand for use;
[0015] (2) Add the mixed solution to the organic solvent at a speed of 5-1000 mL / min under stirring. The organic solvent is one or both of absolute ethanol and acetone at normal temperature. After completion, stand still at room temperature for 1-5 hours, filter to obtain the crystalline product, and dry the obtained crystalline product at low temperature to prepare the ammonium dihydrogen phosphate complex. The lo...
Embodiment 1
[0017] Take 500g of commercially available industrial grade ammonium dihydrogen phosphate, dissolve it with deionized water at 25°C to form a supersaturated solution, take 65g of sucrose and dissolve it with deionized water to form a sucrose solution with a mass fraction of 40%, and mix the above The two solutions were mixed, and the mixed solution was peristaltly added to absolute ethanol at a speed of 500mL / min. In the actual production process, the agitator was turned on, and after the addition was completed, it was left to stand at room temperature for 1 hour, and the crystals were precipitated by filtration, and the solid was separated from the solution. The filtered product was dried at 0°C for 2 h before use.
[0018] Application of ammonium dihydrogen phosphate compound: Weigh battery-grade lithium carbonate, battery-grade ferrous oxalate and synthesized ammonium dihydrogen phosphate compound according to the Li:Fe:P molar ratio of 1.01:1:1.05. Grind for 2 hours in an ...
Embodiment 2
[0020] Take 500g of commercially available industrial grade ammonium dihydrogen phosphate, dissolve it with deionized water to form a supersaturated solution at 40°C, take 68g of glucose to form a 50% glucose aqueous solution by mass fraction, mix the two solutions under constant stirring, and mix the mixed solution Add to acetone at a rate of 200mL / min, turn on the stirrer during the addition, and stand still at room temperature for 2 hours after the addition is completed. The crystals are precipitated by filtration, and the solid is separated from the solution. The filtered product is dried at -5°C for 4 hours before use.
[0021] Application of ammonium dihydrogen phosphate compound: Weigh battery-grade lithium carbonate, battery-grade ferrous oxalate and synthesized composite ammonium dihydrogen phosphate respectively according to the Li:Fe:P molar ratio of 1.01:1:1.04. Grind for 2 hours in an anhydrous ethanol system in a stirring grinder. After grinding, the slurry is dyn...
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